Concept was great, execution was crap.
It was a very bad, over 40's adult interpretation of what a kid might like in a home computer and also appease their parents. Had they just asked a few kids / youths for input it would have been better. (Ask your demographic market for creative input? Surely that could never work!) UK Amiga marketing always sucked, all TV commercials, all magazine articles. Word of mouth, coupled with shop displays in John Menzies, WHSmiths & Tandy are what sold the Amiga.
US Amiga adverts were even worse.
I wonder if in 20 years we will look back at say... the Nintendo Wii/DS marketing (which IMO is fecking awesome!) and think it was crap?